Abstract
MgNiCx with an amorphous structure were synthesized up to x=1.31 by mechanical alloying of amorphous (a-)MgNi and graphite as starting materials. The core-level X-ray photoelectron spectroscopy revealed that the original bonding states with metallic character of a-MgNi remained even in the sample with high carbon content although the graphite dissolved as interstitial carbon and it mainly bounded with Mg in a-MgNi. The crystallization temperature of MgNiCx increased with increasing carbon content up to x=0.85, which was accompanied by a drastic change in the crystallization processes. Upon hydrogenation of MgNiCx, the atomic ratio of hydrogen plus carbon to metal (H+C)/M remained a constant value of ≃0.9 through the whole system, indicating that carbon atoms dissolved into the sites that otherwise would have been occupied by hydrogen atoms.
Original language | English |
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Pages (from-to) | 160-163 |
Number of pages | 4 |
Journal | Journal of Alloys and Compounds |
Volume | 270 |
Issue number | 1-2 |
DOIs | |
Publication status | Published - 1998 May 29 |
Externally published | Yes |
Keywords
- Amorphous
- Crystallization temperature
- Magnesium - Nickel
- X-ray photoelectron spectroscopy
ASJC Scopus subject areas
- Mechanics of Materials
- Mechanical Engineering
- Metals and Alloys
- Materials Chemistry